WebOct 11, 2024 · Fringe Projection Procedure. The principle used in phase stepped fringe projection is the association of the absolute phase measured by the process to a physical height. To perform a coordinate measurement in fringe projection, at least three-phase stepped images of the projected pattern are acquired by the camera. WebMar 15, 2024 · Fringe projection profilometry (FPP) [] is an important three-dimensional (3D) measurement technique with the advantages of noncontact, high accuracy, high speed, and simple instrumentation; it is widely used in industrial modeling, medical imaging, heritage conservation, etc.The basic principle is to project periodically changing …
Interferometry technology and measuring principles - Sensofar
WebJun 1, 2024 · Real-time. Fourier transform profilometry. 1. Introduction. Fringe projection techniques have been widely used in a large number of fields, including reverse … WebOct 25, 2024 · The principle diagram of microscopic fringe projection measurement is shown in Fig. 1.Firstly, the fringe image is projected by the projector, as shown in Fig. … george hw bush 1996
Real-time profilometry by bicolor grating video projection
WebOct 26, 2024 · Zhongwei Li, Research on Structured Light 3D Measuring Technology and System Based on Digital Fringe Projection (Huazhong University of Science and Technology, ... Chen, J. B. Zhao, and R. B. Xia, “ Improvement of the phase unwrapping method based on multi-frequency heterodyne principle,” Acta Opt. Sin. 36, ... WebOct 1, 2024 · Fringe projection profilometry (FPP), which is a typical structured-light 3D measurement method, can quickly obtain 3D data with pixel-level resolution and full field … WebMar 1, 2007 · A novel aperture extrapolation method is developed by which the phase accuracies of the Fourier-transform method at the aperture boundaries are effectively improved and the detuning errors induced by frequency mismatching are avoided. A local frequency estimation approach for the fringe pattern with a spatial carrier by which the … george h w bush 1988 campaign